Machine for shaving stereotype-plates



G. E. LLOYD.

MACHINE FOR sHAVINe STBRBOTYPB PLATES.

No. 338,529. Patented Jan. 5, 1886.,

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(No Model.)

faz/M QW/w ATTORNEY 'tlNiTen STATES PATENT Orifice.

GEORGE E. LLOYD, OF CHICAGO, ILLINOIS.

MACHINE FOR SH-AVING STEREOTYPE-PLATES.

SPECIFICATION forming part of Letters Patent No. 333,529, dated January5, 1886.

Application filed May 12, 1885. Serial No. 165,169. (No mo'lel.)

'o @ZZ whom it may concern.-

Be it known that l, GEORGE E. LLOYD, of Chicago, in the county of Cookand State of Illinois7 have invented certain new and useful Improvementsin Stereotype Shaving Machines; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enablev others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters of reference marked thereon, which form a part of thisspecification.

The object of my invention is to provide certain improvements andattachments to stereotype-shaving machines,which especially adapt it tothe shaving of stereotype blocks and plates having tenons thereon andmortises therein, respectively.

In the drawings, Figure 1 is a side elevation of the front end of astereotype-shaving niachine. Fig. 2 is a vertical transverse sectiontaken on line x x, Fig. l. Figs. 3 and 4 are plan views 0f a couple ofattachments, and Fig. 5 is an end view of a stereotype-plate which mymachine is adapted to shave.

Reference being had to the drawings, A represents the knife-carryinghead, which is advanced to or withdrawn from the work by the usualmechanism-to wit, racks extending to the rear horizontally and parallelto each other from either end of said head, and pinions fast on thedrive-shaft, which passes transversely over the bed of the machine. Thisconstruction, briefly stated, is the same that has been in use for manyyears past, and my machine does not ditfer from it materially, exceptthat in the cutting-edge of the knife B, preferably on the left-handside of the machine, there is a rectangular recess, b, the use of whichwill hereinafter be explained, and the friction-roller C, with means foroperating the same. This roller C is journaled in the blocks c c, whichhave extending vertically from them a cylindrical spindle, d, which isstepped to a smaller diameter a short distance above saidbearing-blocks, so as to form shoulders. These spindles move in guidesD, the lower opening of the bore of which corresponds in diameter to thegreatest diameter of the spindle. This diameter of the spindle ispreserved to near the top of the guide D,where it is decreased tocorrespond to the lesser diameter of the spindle which projects out fromthe top, and has pivoted to its upper end the cam-lugs of the handle E.The distance from the pivotalpoint of these cam-lugs to their undersurfaces when in a vertical position is greater than the distance fromsaid pivotal center to the sides ofsaid cam-lugs, conse-- quently whenthe handles (from the lower end of which the cam-lugs extend) are in avertical position the roller C will be lifted from the work, and whensaid handles are oscillated t0 a horizontal position the roller willbear down upon the work.

Between the shoulders formed by decreasing the diameters of the spindlesd and the upper terminus of the bore of the guide, I surround saidspindle with an expansion-spring, e. This spring e, when thefriction-roller is pressed down onto the work, holds the roller down,and yet permits it to give when any irregular surface passes under it.The guides D have laterallyprojecting lugs g, by means of which theyaresecured to the end frames of the knifecarrier'A in front of said knife.

As before stated, my invention is particularly adapted to shavingstereotype bases and plates, the design of which is sufficientlyillustrated in Figs. 5 and 2, in which latter figure the base is shownunder the knife.

In order to shave either the base or plate,

it is necessary that they be elevated a distance' corresponding to thethickness of the base, if it is the plate being shaved, and a distancecorresponding to the thickness of the plate, if it is the base beingshaved. This I accomplish bythe plates G and Hfor the stereotypebase, asshown in Figs. l2, 3, and 4, and one similar to G, only thicker, for theplate. The plate G is of a thickness corresponding to thestereotype-plate adapted to fit the base mounted thereon, has sideledges to prevent said base from falling off laterally, and is placedlongitudinally on the bed-plate of the machine, that the tenon of thestereotype-base mounted thereon will enter the recess bin the knife. Theplate H corresponds in thickness to G,

has side ledges similar thereto to prevent the base from falling offlaterally, and has a central longitudinal mortise the obverse of thetenen of the base which it is adapted to receive. The plate G is held inits longitudinal roo position by means of dowel-pins entering suitableholes in the bed-plate-,

The advantage of the friction-roller is that it holds the metal downwhile being shaved, which otherwise might be lifted as the knifeadvances, and thus shaved too much.

1. The combination, in a stereotype-shaving machine, with the carrier Aand knife B, of the plates G and H.

2. The combination, in a stereotype shaving machine, with the carrier A,of knife B, having a recess, vb, in its cutting-edge.

3. The combination, in a stereotype-shaving machine,with the carrier Aand knife B, having a rectangular recess, b, in its cutting-edge, ofplate G.

4. The combination, in a stereotype-shaving machine,\vith the carrierand the knife, of the plate H, having longitudinal side ledges and a.longitudinal central mortise.

5. The combination, in a stereotypeshaving -machine, with carrier-head Aand knife B,

having recess b therein, of the plates G and H, said plate Gcorresponding in thick ness to stereotype plate or base, and said plateH having a longitudinal central mortise and corresponding in thicknessto a stereotypeplate.

6. The combination, ina stereotype-shaving machine, with thecarrier-head A and knife B, of the friction-roller arranged parallelwith,on about the same horizontal plane as and in front of, thecuttngedge of said knife.

7. The combination, in a stereotypeshaving machine, of a frictiouroller,blocks in which the same isjournaled, spindles projecting upward fromsaid blocks, camhandles,and guides in which said spindles move.

8. The combination, with a stereotype-shaving machine, of afriction-roller, C, blocks c, spindles d, handles E, guides D, andspring e, as hereinbefore described.

In testimony that I claim the foregoing as my own I .hereunto aiix mysignature in presence of two witnesses.

GEORGE E. LLOYD.

Witnesses:

JAMES H. OOYNE, FRANK D. THoMAsoN.

